<template>
    <div class="sidebar">
        
        <el-menu class="sidebar-el-menu" :default-active="defaultActive" :collapse="collapse" background-color="#324157"
            text-color="#bfcbd9" active-text-color="#20a0ff" unique-opened router>
            <div :class="collapse?'collapsebox2':'collapsebox'" @click="collapseChage"><i :class="collapse?'el-icon-arrow-right':'el-icon-arrow-left'"></i></div>
            <template v-for="item in menuList">
                <template v-if="item.subs">
                    <el-submenu :index="item.index" :key="item.index">
                        <template slot="title">
                            <i :class="item.icon"></i><span slot="title">{{ item.title }}</span>
                        </template>
                        <el-menu-item v-for="(subItem,i) in item.subs" :key="i" :index="subItem.index">
                            {{ subItem.title }}
                        </el-menu-item>
                    </el-submenu>
                </template>
                <template v-else>
                    <el-menu-item :index="item.index" :key="item.index">
                        <i :class="item.icon"></i><span slot="title">{{ item.title }}</span>
                    </el-menu-item>
                </template>
            </template>
        </el-menu>
    </div>
</template>

<script>
    import bus from '@/utils/bus';
    export default {
        props:{
            menuList:{
                type:Array,
                required:true
            },
            defaultActive:{
                default:'/index',
                required:true
            }
        },
        data() {
            return {
                collapse: false,
            }
        },
        computed:{
            onRoutes(){
                return this.$route.path.replace('/','');
            }
        },
        created(){
            bus.$on('collapse', msg => {
                this.collapse = msg;
            })
        },
        methods:{
            collapseChage(){
                this.collapse = !this.collapse;
                bus.$emit('collapse', this.collapse);
                console.log('collapse',this.collapse)
            }
        }
    }
</script>

<style scoped>
    .sidebar{
        display: block;
        position: absolute;
        left: 0;
        top: 50px;
        bottom:0;
        overflow-y: scroll;
    }
    .sidebar::-webkit-scrollbar{
        width: 0;
    }
    .sidebar-el-menu:not(.el-menu--collapse){
        width: 160px;
    }
    .sidebar > ul {
        height:100%;
    }
</style>
